Terumo Kabushiki Kaisha

Shingo Ishii

Yukio Imai

Masaaki Kasai

Tsutomu Sugiki

Koichi Hayakawa

A medical device in which a part to be secondarily shaped comprises a molded silicone rubber article is subjected to heatless shaping by irradiation with electron-rays. The irradiation with electron-rays enables shaping and, furthermore, sterilization under some conditions. In a medical device comprising a part in which at least a silicone rubber is used and the mechanical properties of the silicone rubber preferentially appear, the shape of the above-described part upon molding is deformed with the use of a correcting member to a level exceeding the desired deformed shape and maintained in this state. Next, electron-ray irradiation is conducted in this state and then the correcting member is eliminated. Thus, the desired deformed shape intermediate between the shape upon the molding and the shape upon the electron-ray irradiation can be obtained.

Medical device manufacturing method and medical device assembly

A valve body is formed from an elastic member in the form of an elliptic or circular film (disk shape) having an upper face and a lower face. The valve body has an opening and closing section which is opened and closed in response to insertion and pulling out of a dilator and is formed from a first slit, a second slit, a second concave portion and two third concave portions. A pair of ribs and six projections are formed on the lower face side of the valve body. The ribs are disposed in opposing relationship to each other with the second slit interposed therebetween and extend along the lower face. Further, the projections are disposed such that they are positioned on the inner side of the ribs and are opposed to each other with the second slit interposed therebetween.

Valve body and medical tool

A valve body formed from an elastic member in the form of an elliptical or circular film (disk shape) has upper and lower surfaces. A first concave portion is formed on the upper surface side of the valve body. The valve body further has an opening and closing section which is opened and closed in response to insertion and pulling out of a dilator and is formed from a first slit, a second slit, a second concave portion and two third concave portions. The second concave portion is formed at a portion of the concave surface side of the valve body corresponding to an intersecting portion, and the third concave portions are formed at the opposite end portions of the first slit. The second concave portion extends, in a thickness wise direction of the valve body, to an intermediate portion of the first slit but not to the second slit.

Growing community of inventors

Nakakoma-gun, Japan

Shingo Ishii